tober



Sept. 14 1926. 1,600,080

C. TOBER BRAIDING MACHINE Filed Feb. 17, 1925 2 Sheets-heet 1 Sept. 14, 1926.

C. TOBER BRAIDING MCI-mm4 Filed Feb. 17, 1925 2 Sheets-Sheet 2 ,wQ/M// Pamesa sept. 14, 192e.

TES

` Uirnn STA Lee-aos CARL TOBER, 0F BERLIN-KARLSHORST, GERMANY.

:enainiive MACHINE.

vApplication `filed. February 1'?, 1925-, Serial No. 9,723, and in Germany February 20, 1924.

My invention relates to braiding machines having two rowsof bobbins crossing each other in opposite directions, the inner bobbins being continuously driven by avroller system, and my invention more particularly consists in a machine embodying the novel coniibination of a roller system and a guide track for the bobbin slides, which combination gives a valuable new result; tliusthe power required for driving the bobbin slides upon their track is lessened in a considerable degree, and the inner bobbins are securely guided by the slides and the slide track. In that way a much smaller pressure than heretofore` is put on the outer threads during the passage through the roller system, the machine runs more easily and its construction is greatly simplified.

In a machine where inner bobbins are continuously moved around the braiding axis by a roller system which operates witliouta slide guide for the inner bobbins, the double `roller systeinconsists in rollers appliedto both ends of the inner .bobbins, whereby the inner bobbins are driven and at thesame time maintained in their position relative to the braiding centre. Because of the drive rollers being disposed above the roller path my new machine has the ad` vantage of requiring only a small expenditure of power for driving the nnerbobbins.

ln machines for instance, such as` described'in Patent No. 1,456,656, having a roller syste-m and slide tracks for the inner bobbins, the continuous movement of the inner `bobbins around the braiding centre s effected by means of rollers provided at one end only of the bobbins. In that construction the axles ofthe driving rollers are ar ii'angedbelow a roller path which causes the rollers of the roller system to rotate about their own axes which latter must be located below the roller path to enable the roller to be rotated about their own axes in the `direction required for the passage of the outer threads `through the roller system. Such an arrangement however, due to the drive roller axis being far below the roller path results in an unfavorable driving angle relative to the bobbin guide track with the result that a considerable upward driving component directed at right angles to the guide track is produced, causing a correspondingly high frictional resistance of the bobbin slides on their guide track and a correspondingly hard pressure against the outer Athreads during their passage through the roller system.

The present invention combines the advantages of both types of machine without the disadvantages thereof. llhile the inner bobbins aresecurely guided by slides upon a guide track7 the axles of the drive rollers are arranged above the roller path, so that the driving angle and therefore the power components directed upwardly at right angles to the guide path is reduced to zero sparing the outer threads to an extraordinary degree and allowing an easy running of the machine.

A further object of my invention is to so connectthe slide rollers to the slidesl that they always bear completely upon the roller path, as .for instance, by gravity, the rollers being inovably guided in the slides. This is preferably effected by pins inserted in the slides. The sliderollers however may also be connected to the slides by linked intermediate members. The pressure of the slide rollers upon the roller path may be increased by springs.

The invention is illustrated in the accompanying drawings, in which Figure l is a vertical section through a braiding machine embodying the invention and in which figure, for the sake of clearness, only two inner bobbins and one outer bobbin are shown. Figure 2 is a view as seen from the inside of the roller system on -tlie surface ofthe cone marked c in Figure l in which the path of the outer thread relative to the rollersystem is shown. Figure 3 is a fragmental view as seen from the outside viewed in the direction of the arrow m in Figure l, showing the outer thread guideand the travel of the outer thread relative to the moving slide track. Figure 4 is a plan of a bobbin slide and slide roller viewed l. Figure 5 is a vertical section drawn to a larger scale, of a portion of the braiding. machine in which for greater clearness sake only one slide roller and one inner bobbin are shown as well as one drive roller only shown as being in the same plane with theslide roller. The drive roller lies in reality sidewise relative to the slide rolleras can be seen in Figure 7 Figure 6 is a section in the direction of the arrown in Figure 1 -outer thread guides each consisting nof a roller 3 and a rocking lever 5 (Figure 3). The Ycarrier 7 which also carries the guiderail 41 for the bobbin slides 37 is moved around the braiding axis by means of the bevel gear 3l secured to carrier 7 by the bevel gear 36 on the driven shaft 29.

The slides 37 carrying the inner' bobbins 20 and moving in opposite direction to the guide rail 411 are driven in the following manner by the roller system. y

The bevel gear 36 is also in mesh with a bevel gear 42 (Fig. 1) which is situated opposite bevel gear 34k and therefore rotates in i opposite direction to vthe bevel gear 341. The

vbevel gear 42 is secured to a hollow shaft rotatably journalled in the stationary center bearing 17. The upper end of shaft 25- supports the roller carrier 26 which carries the .axles 31 upon which rotate the driverollers 430 for driving the bobbin slides 37 upon the guide rail 411.

As the carrier 26 is rotated the drive rollers kact lon slide rollers 23 connected to the slides 37 by their axles 22 so that the slides 37 are moved along the vguide rail al1 in the direction of the arrow around the braiding axis. In order to allow the outer threads which have in respect t0 the guide rail 41. a to and fro movement indicated by j) in Figure 3, but relative to the roller system a wave-like movement indicated by 0, in Figure 2 and which cross in opposite directions while moving to and fro to pass between the drive rollers 30 and the slide rollers l 23, the latterV as well as the drive rollers 30 should be given besides their circular movement around the braiding axis a rotation about their own axes. This rotation is effected by causing the slide rollers 23 to run `upon :a track 33 formed on 4the carrier 7, the slide rollers in their turn rotating the drive rollers 30 due to the driving fricltion so that the outer threads pass without being twisted between track 33 and slide rollers 23 and between the slide` rollers 23 and the drive rollers 30.

In order that the slide rollers 23 will bear securely upon track 35, preferably the axles 22 of rollers 23 are connected to their slides 37 by links 28 through pins 152, see Figure 2, so that the rollers 23 will bear through gravity upon track 33.

The spindles of bobbins 20 may either be connected direct with vthe axles 22 ofV the slide rollers 23 0r may be separate and carried by an arm 60 secured to a thread guide rod 50 as shown in Figure 4.

Figure 2 shows the direction of the continuous drive of axles 31 of the drive rollers 30 relative to the `axles 22 `of the slide rollers 23 and the direction of motion of three slide rollers 23 and of a slide 37 upon the guide rail 41. The driving angle a between both said directions is about half as great as in the usual construction with inner bobbins guided by slides where the angle a has usually been about 50". If the driving force of an axle 31 to an axle 22 were divided into two :torce components of which one lies in the `,direction of the slide moven'ient and the other at right angles thereto it would be found that compared with the old construction there would be a very considerable reduction Iof lost foce components upwardly directed at right angles to the direction of movement of the slide.

- 1f on the other hand, as is made possible by the present invention, the angle a were reduced to Zero, then, the upwardly directed lost force components will also be reduced to Zero, which however would necessitate the outer thread path to become steeper which might have an unfavorable action on the velocit-y of the outer thread guide.

ln Figure 2 butler rollers 150 are shown which d0 not come into operation during the normal run of the machine but only when the machine is suddenly pulled up, in which case they take up the momentum ot' the slides; they are, however, used as driving rollers when it is required to reverse the machine which usuallyv is don-e slowly by hand.

In place of a drive roller 30 and a buffer 24 or more bobbins, -because the angle between two neighboring inner 'bobbins is a'lways smaller and therefore the intermediate space between two slide rollers 23 becomes smaller as compared with machines having, for example, 1.6 bobbins where the angl-e between two neighboring inner bobbins is 450 andthe intermediate spaces between two slide'rollers are correspondingly large.

Figures 1 and l also show the well-known protecting shield 151 mounted on the spindle of the inner .bobbin 2O and having for its function to prevent the outer threads from touling the inner bobbins 2O but allowing them to slide if necessary on the per-iphery of the protecting shield 151.

Figures 1 and 3 4show diagrammatically the rolls 3 rolling upon the curved track 8,; the rolls 3 are mounted upon their axles 2 eccentrically relative to a spindle 4e, Figure 3, thus giving the levers 5 which guide the threads coming from the outer bobbins 182l to and fro movement in well-known manner. The rollers 3 are held in a well-known manner by a spring (not shown) in contact with the curved track S..

A modification ot connecting the slide rollers 23 to the slides 37 is illustrated in Figures 5 yto 7.. According to these figures, the axle 22 is secured to a bracket 1.60 mounted on a stud 161 which is movable in a bore in sli-de 37. In order to prevent bracket 160 from turning on stud 161 in a horizontal plane, the bracket is arranged adjacent to one side oi slide 37 and is given an extensive surilace as can be seen from Figure 6.

The driving means comprising bracket 160 and stud 161. descends because of its own weight and that of the slide roll and inner bobbin until the slide roll 23 bears on the track 33. The diagram shown in Figure 7 illustrates a braiding;` machine equipped with sixteen bobbins and one drive roll only between each two slide rolls 23; slide 37 is shown orv the lett hand side with bracket 160 and its stud 161 as well as the path 0 described by the outer thread relative to the rollers of the roller system.

I claim:

1. In a braiding machine having two rows oit bobbins moving in opposite direction, carriers therefor and rollers continuously driving the inner bobbins, the combination with said inner bobbins, slides for guiding the same, and a track 'lor said slides, oi rollers mounted on said slides and a path for said slide rollers provided on the carrier for the outer bobbins.

2. In a braiding machine having two rows of bobbins moving in opposite direction, carriers therefor and rollers 'lor continuously driving the inner bobbins, the combination .with said inn er bobbins, slides for guiding them and a track for said slides, of rollers mount-ed on said slides, and a path 'for said slide rollers provided on the carrier for the outer bobbins, said drive rollers having their axles arranged above said path.

3. In a braiding machine having tow rows ot' bobbins moving in opposite direction, carriers therefor and rollers tor continuously driving the inner bobbins, the combination with said inner bobbins, slides for guiding them and a track for said slides, of a path provided on the carrier for the outer bobbins, and rollers mounted on said slides and maintained through gravity on said path, said drive rollers having their axles arranged above said path.

l. In a braiding machine having two rows of bobbins moving in opposite direction, carriers therefor and rollers orcontinuously driving the inner bobbins, the combination with said inner bobbins and slides for guiding them and a track :for said slides, or rollers mounted on said slides, studs inserted in said slides and movably guiding said slide rollers, and a path for said slide rollers provided on the carrier for the outer bobbins, said drive rollers having their axles arranged above said path.

5. In a braiding machine having two rows of bobbins moving in opposite direction, carriers ior said bobbins and rollers for continuously driving the inner bobbins, the combination with said inner` bobbins, slides for guiding them and a track for said slides, of slide rollers, movable links connecting Said slide rollers to said slides, and a path or said slide rollers provided on the carrier for the outer bobbins, said drive rollers having their axles arranged above said path.

In testimony whereof I have a'HiXed my signature.

CARL TBER. 

